I have owned a regular black gw m5600 for many years and am very fond of it. I recently saw a "Clear / Eco" edition:
Casio: G-Shock GW-5600KJ-2JR GW-5xx photos, videos and specifications GW5600KJ-2JR | Watch Archive
There used to be a website buygshocks.com (no longer works) where they sold them for $90. Anyone know where they could be still up for sale?